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Findings

CVE-2022-42475

Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability

Published Dec 13, 2022 · updated Jun 16, 2026 · fortinet fortios

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 13, 2022 · Catalog

    Detected

    A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

  2. Dec 13, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jan 3, 2023 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

Required action

Apply updates per vendor instructions.

CISA due date Jan 3, 2023

Affected

  • cpe fortinet/fortiosversion unspecified
  • cpe fortinet/fortiproxyversion unspecified
  • vendor Fortinet FortiOSversion unspecified

Sources

  • CISA KEVCVE-2022-42475

    Multiple versions of Fortinet FortiOS SSL-VPN contain a heap-based buffer overflow vulnerability which can allow an unauthenticated, remote attacker to execute arbitrary code or commands via specifically crafted requests.

    cisa.gov
  • CVE.orgCVE-2022-42475

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2022-42475

    30-day exploitation probability 99.5%

    first.org
  • NIST NVDCVE-2022-42475

    A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attac

    nvd.nist.gov

References

CVE-2022-42475 · ZeroDay Findings